I do understand what you are saying. I guess the question I should ahve asked, and I did not, is what are you expecting to find? Given the shorter time crit starts coming out ahead? Spirit is now a top stat? You cannot increase spell power, as you can spirit, hit, crit, or haste. Yes, spirit in itself increase spellpower by a factor of 39%, but that is already factored into the sim results. Is your argument that you think: haste will be lower than crit in a shorter fight (let's say 2m average)? It is that haste may be lower than spirit in this same time frame?
I do not see how a stats value will change when we go from one point to another. Yes, mathematically its value may be .05 lower or something given where the boss dies/swap, but haste is much higher than the other stats over a 5m encounter.
That being said, I don't see any harm in proving this one way or another.
EDIT: I am using the same gear as in the second post in this thread. I have not modified any values with the exception of hit to make sure it is setting that to a 0 scale since I am geared for having the 1% spacegoat in my group.
So, crit does matter under a 75s encounter. This is not terribly surprising in hindsight; if you had an encounter that lasted 2.5 seconds and only had an incinerate to cast, you would care most about spell power and crit (due to double damage on crits). This model holds, at least with my gearset, until a fight lasts at least 75s.
That being said, you still have other damage on your previous target as said before, this these numbers still do not fully reflect 'target swapping'.